All Halloween items have been reduced! This includes sounds, textures, particles and more. You will find them in the particle store, in the yard out front when you arrive and at the House of Horrors.
You can find them at Knucklehead's:
http://slurl.com/secondlife/Dingo/108/22/56
All items on SLX have been reduced as well. They can be found at:
http://xstreetsl.com/modules.php?CategoryID=358&SearchCurrentCategory=on&name=Marketplace&MerchantID=84349&